The gaze selects informative details within pictures

Attention, Perception, & Psychophysics - The visual fixations of 20 Ss viewing each of two pictures were measured. Each picture was later divided into 64 squares, and 20 other Ss judged their...     

A hullian reasoning situation

An experiment on a well-known but little-investigated situation proposed by Hull, is reported. The results are inconclusive.     

Size and reliability of frequency-difference thresholds determined with operant tracking procedure

Auditory frequency discrimination thresholds have been determined by a “tracking procedure” at five frequencies and two intensity levels for a group of four cats. Intra-animal thresholds were found to be quite stable, and there was good inter-animal agreement among three of the four cats. Although quite stable, the tracking thresholds were larger than those which had been obtained using an avoidance procedure. However, because of the several differences between the tracking procedure and avoidance conditioning procedure, no conclusions can be drawn concerning the efficacy of the different types of reinforcement in determining the ultimate limit of the animals' discrimination ability.     

Jewish biomedical ethics and care of the AIDS patient

Jewish biomedical ethics form part of the broader Judeo-Christian ethical system that prescribes appropriate social conduct for most Americans. They are based on law(halachah) that is derived from the Hebrew Bible and its interpretations. The principle on which they center is that every person is sanctified by God and therefore of infinite value. Therefore, every effort must be made to preserve and protect human life. The management of the patient with AIDS engenders many problems of an ethical nature. An appreciation of the Judaic solutions to these problems may assist physicians caring for patients with AIDS in making their management decisions.     

An anger-control intervention with aggressive delinquent youths

Social problem-solving skills, a self-instructional procedure, and a “thinking-ahead” procedure were taught to institutionalized, aggressive, delinquent adolescents as part of an anger-control intervention package. A multiple baseline design across four subjects and an alternating-treatments design were used. The effects of intervention were assessed on problem-solving ability, use of self-guiding verbalizations for coping with anger provoking situations, reported frequency of anger-control behaviors relative to loss of anger-control incidents, and behavioral progress within the institution. All youths showed improvement during the training of problem solving on hypothetical dilemmas, with some generalization to untrained problems. Follow-up data on some youths suggested maintenance of treatment gains. Three of the youths displayed increased usage of self-instructions and thinking-ahead statements during personal anger-provoking situations. All youths displayed an increase in self-reported anger-control behaviors relative to loss of anger-control. Improvements in behavior outside of the therapy sessions were indicated by positive behavioral progress within the institution.     

Use of Socially Dependent Bases of Power: French and Raven's Theory Applied to Workgroup Leadership1

This study examines how supervisors from three different organizations use social power in workgroups. A sample of 127 leaders completed a self-report questionnaire describing social influence attempts using a scale derived from French and Raven's (1959) five bases of social power. The results show no significant differences between organizations in use of the bases of social power. Referent and Expert powers were used significantly more frequently by these leaders than Legitimate, Reward, and Coercive powers. The number of subordinates supervised within the workgroup was significantly correlated with increased use of Coercive power by the workgroup leader. These results are discussed in terms of the potential for using socially dependent influence to explain leaders' direction of workgroup members.     

Age differences in discrimination of simulated single-formant frequency transitions

We studied auditory discrimination of simulated single-formant frequency transitions that resembled portions of certain speech consonants. Significant age differences in transition discrimination occurred; both children and older adults required larger acoustic differences between transitions for discrimination than did teenagers/young adults. Longer transitions were more easily discriminated than shorter transitions by all listeners, and there were no differences between discriminations of rising and falling transitions. Teens/young adults and older adults, but not children, required larger frequency differences to discriminate frequency transitions followed by a steady-state sound than for transitions alone. There were also age differences in discrimination of steady-state sounds. These developmental-perceptual differences may help explain why children and older adults who have good pure-tone sensitivity may experience difficulty in understanding speech.     

Unconscious processing of dichoptically masked words

In three experiments, the subjects' task was to decide whether each of a series of words connoted something good (e.g., fame, comedy, rescue) or bad (stress, detest, malaria). One-half second before the presentation of each such target word, an evaluatively polarized priming word was presented briefly to the nondominant eye and was masked dichoptically by either the rapidly following (Experiment 1) or simultaneous (Experiments 2 and 3) presentation of a random letter-fragment pattern to the dominant eye. (The effectiveness of the masking procedure was demonstrated by the subjects' inability to discriminate the left vs. right position of a test series of words.) In all experiments, significant masked priming effects were obtained; evaluative decisions to congruent masked prime-target combinations (such as a positive masked prime followed by a positive target) were significantly faster than those to incongruent (e.g., negative prime/positive target) or noncongruent (e.g., neutral prime/positive target) combinations. Also, in two of the three experiments, when subjects were at chance accuracy in discriminating word position, their position judgments were nevertheless significantly influenced by the irrelevant semantic content (LEFT vs. RIGHT) of the masked position-varying words. The series of experiments demonstrated that two very different tasks--speeded judgment of evaluative meaning and nonspeeded judgment of word position--yielded statistically significant and replicable influences of the semantic content of apparently undetectable words. Coupled with previous research by others using the lexical decision task, these findings converge in establishing the reliability of the empirical phenomenon of semantic processing of words that are rendered undetectable by dichoptic pattern masking.     

Development of a modified treatment evaluation inventory

Kazdin's (1980a) Treatment Evaluation Inventory (TEI) is the major instrument used to assess parents' acceptance of procedures for behavior problem children. The length of the TEI, however, as well as problems with its scaling and wording limits its value as a clinical research instrument. In the present study, three experiments were conducted to develop a modified TEI. In Experiment 1, 153 parents completed the TEI to evaluate a behavioral treatment for noncompliant and oppositional children. A factor analysis of the data was used to obtain a reliable factor structure for the TEI and to construct a 9-item TEI-Short Form (TEI-SF) with a 5-point scale, consistent anchors on the scale, and simplified text and instructions. Experiment 2 evaluated the psychometric characteristics of the TEI and the TEI-SF. These data indicated the TEI-SF is a sound alternative to the original TEI. Experiment 3 compared the readability and completion time of the two instruments.